#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
"""current schema.

Revision ID: e3a246e0dc1
Revises:
Create Date: 2015-08-18 16:35:00.883495

"""

from __future__ import annotations

import sqlalchemy as sa
from alembic import op
from sqlalchemy import func, inspect

from airflow.migrations.db_types import StringID

# revision identifiers, used by Alembic.
revision = "e3a246e0dc1"
down_revision = None
branch_labels = None
depends_on = None
airflow_version = "1.5.0"


def upgrade():
    conn = op.get_bind()
    inspector = inspect(conn)
    tables = inspector.get_table_names()

    if "connection" not in tables:
        op.create_table(
            "connection",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("conn_id", StringID(), nullable=True),
            sa.Column("conn_type", sa.String(length=500), nullable=True),
            sa.Column("host", sa.String(length=500), nullable=True),
            sa.Column("schema", sa.String(length=500), nullable=True),
            sa.Column("login", sa.String(length=500), nullable=True),
            sa.Column("password", sa.String(length=500), nullable=True),
            sa.Column("port", sa.Integer(), nullable=True),
            sa.Column("extra", sa.String(length=5000), nullable=True),
            sa.PrimaryKeyConstraint("id"),
        )
    if "dag" not in tables:
        op.create_table(
            "dag",
            sa.Column("dag_id", StringID(), nullable=False),
            sa.Column("is_paused", sa.Boolean(), nullable=True),
            sa.Column("is_subdag", sa.Boolean(), nullable=True),
            sa.Column("is_active", sa.Boolean(), nullable=True),
            sa.Column("last_scheduler_run", sa.DateTime(), nullable=True),
            sa.Column("last_pickled", sa.DateTime(), nullable=True),
            sa.Column("last_expired", sa.DateTime(), nullable=True),
            sa.Column("scheduler_lock", sa.Boolean(), nullable=True),
            sa.Column("pickle_id", sa.Integer(), nullable=True),
            sa.Column("fileloc", sa.String(length=2000), nullable=True),
            sa.Column("owners", sa.String(length=2000), nullable=True),
            sa.PrimaryKeyConstraint("dag_id"),
        )
    if "dag_pickle" not in tables:
        op.create_table(
            "dag_pickle",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("pickle", sa.PickleType(), nullable=True),
            sa.Column("created_dttm", sa.DateTime(), nullable=True),
            sa.Column("pickle_hash", sa.BigInteger(), nullable=True),
            sa.PrimaryKeyConstraint("id"),
        )
    if "import_error" not in tables:
        op.create_table(
            "import_error",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("timestamp", sa.DateTime(), nullable=True),
            sa.Column("filename", sa.String(length=1024), nullable=True),
            sa.Column("stacktrace", sa.Text(), nullable=True),
            sa.PrimaryKeyConstraint("id"),
        )
    if "job" not in tables:
        op.create_table(
            "job",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("dag_id", sa.String(length=250), nullable=True),
            sa.Column("state", sa.String(length=20), nullable=True),
            sa.Column("job_type", sa.String(length=30), nullable=True),
            sa.Column("start_date", sa.DateTime(), nullable=True),
            sa.Column("end_date", sa.DateTime(), nullable=True),
            sa.Column("latest_heartbeat", sa.DateTime(), nullable=True),
            sa.Column("executor_class", sa.String(length=500), nullable=True),
            sa.Column("hostname", sa.String(length=500), nullable=True),
            sa.Column("unixname", sa.String(length=1000), nullable=True),
            sa.PrimaryKeyConstraint("id"),
        )
        op.create_index("job_type_heart", "job", ["job_type", "latest_heartbeat"], unique=False)
    if "log" not in tables:
        op.create_table(
            "log",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("dttm", sa.DateTime(), nullable=True),
            sa.Column("dag_id", StringID(), nullable=True),
            sa.Column("task_id", StringID(), nullable=True),
            sa.Column("event", sa.String(length=30), nullable=True),
            sa.Column("execution_date", sa.DateTime(), nullable=True),
            sa.Column("owner", sa.String(length=500), nullable=True),
            sa.PrimaryKeyConstraint("id"),
        )
    if "sla_miss" not in tables:
        op.create_table(
            "sla_miss",
            sa.Column("task_id", StringID(), nullable=False),
            sa.Column("dag_id", StringID(), nullable=False),
            sa.Column("execution_date", sa.DateTime(), nullable=False),
            sa.Column("email_sent", sa.Boolean(), nullable=True),
            sa.Column("timestamp", sa.DateTime(), nullable=True),
            sa.Column("description", sa.Text(), nullable=True),
            sa.PrimaryKeyConstraint("task_id", "dag_id", "execution_date"),
        )
    if "slot_pool" not in tables:
        op.create_table(
            "slot_pool",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("pool", StringID(length=50), nullable=True),
            sa.Column("slots", sa.Integer(), nullable=True),
            sa.Column("description", sa.Text(), nullable=True),
            sa.PrimaryKeyConstraint("id"),
            sa.UniqueConstraint("pool"),
        )
    if "task_instance" not in tables:
        op.create_table(
            "task_instance",
            sa.Column("task_id", StringID(), nullable=False),
            sa.Column("dag_id", StringID(), nullable=False),
            sa.Column("execution_date", sa.DateTime(), nullable=False),
            sa.Column("start_date", sa.DateTime(), nullable=True),
            sa.Column("end_date", sa.DateTime(), nullable=True),
            sa.Column("duration", sa.Integer(), nullable=True),
            sa.Column("state", sa.String(length=20), nullable=True),
            sa.Column("try_number", sa.Integer(), nullable=True),
            sa.Column("hostname", sa.String(length=1000), nullable=True),
            sa.Column("unixname", sa.String(length=1000), nullable=True),
            sa.Column("job_id", sa.Integer(), nullable=True),
            sa.Column("pool", sa.String(length=50), nullable=True),
            sa.Column("queue", sa.String(length=50), nullable=True),
            sa.Column("priority_weight", sa.Integer(), nullable=True),
            sa.PrimaryKeyConstraint("task_id", "dag_id", "execution_date"),
        )
        op.create_index("ti_dag_state", "task_instance", ["dag_id", "state"], unique=False)
        op.create_index("ti_pool", "task_instance", ["pool", "state", "priority_weight"], unique=False)
        op.create_index(
            "ti_state_lkp", "task_instance", ["dag_id", "task_id", "execution_date", "state"], unique=False
        )

    if "user" not in tables:
        op.create_table(
            "user",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("username", StringID(), nullable=True),
            sa.Column("email", sa.String(length=500), nullable=True),
            sa.PrimaryKeyConstraint("id"),
            sa.UniqueConstraint("username"),
        )
    if "variable" not in tables:
        op.create_table(
            "variable",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("key", StringID(), nullable=True),
            sa.Column("val", sa.Text(), nullable=True),
            sa.PrimaryKeyConstraint("id"),
            sa.UniqueConstraint("key"),
        )
    if "chart" not in tables:
        op.create_table(
            "chart",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("label", sa.String(length=200), nullable=True),
            sa.Column("conn_id", sa.String(length=250), nullable=False),
            sa.Column("user_id", sa.Integer(), nullable=True),
            sa.Column("chart_type", sa.String(length=100), nullable=True),
            sa.Column("sql_layout", sa.String(length=50), nullable=True),
            sa.Column("sql", sa.Text(), nullable=True),
            sa.Column("y_log_scale", sa.Boolean(), nullable=True),
            sa.Column("show_datatable", sa.Boolean(), nullable=True),
            sa.Column("show_sql", sa.Boolean(), nullable=True),
            sa.Column("height", sa.Integer(), nullable=True),
            sa.Column("default_params", sa.String(length=5000), nullable=True),
            sa.Column("x_is_date", sa.Boolean(), nullable=True),
            sa.Column("iteration_no", sa.Integer(), nullable=True),
            sa.Column("last_modified", sa.DateTime(), nullable=True),
            sa.ForeignKeyConstraint(
                ["user_id"],
                ["user.id"],
            ),
            sa.PrimaryKeyConstraint("id"),
        )
    if "xcom" not in tables:
        op.create_table(
            "xcom",
            sa.Column("id", sa.Integer(), nullable=False),
            sa.Column("key", StringID(length=512), nullable=True),
            sa.Column("value", sa.PickleType(), nullable=True),
            sa.Column("timestamp", sa.DateTime(), default=func.now, nullable=False),
            sa.Column("execution_date", sa.DateTime(), nullable=False),
            sa.Column("task_id", StringID(), nullable=False),
            sa.Column("dag_id", StringID(), nullable=False),
            sa.PrimaryKeyConstraint("id"),
        )


def downgrade():
    op.drop_table("chart")
    op.drop_table("variable")
    op.drop_table("user")
    op.drop_index("ti_state_lkp", table_name="task_instance")
    op.drop_index("ti_pool", table_name="task_instance")
    op.drop_index("ti_dag_state", table_name="task_instance")
    op.drop_table("task_instance")
    op.drop_table("slot_pool")
    op.drop_table("sla_miss")
    op.drop_table("log")
    op.drop_index("job_type_heart", table_name="job")
    op.drop_table("job")
    op.drop_table("import_error")
    op.drop_table("dag_pickle")
    op.drop_table("dag")
    op.drop_table("connection")
    op.drop_table("xcom")
